Furnace-water-pan construction



March 1 1927 1,619,261

1 r J. P. KOLLA FURNACE WATER PAN CONSTRUCTION 2 Sheets-Sheet 1 Filed A ril 13, 1925 Inuenior B JohnPKolm FinanitllItHh-a Mfume;

Mar ch 1 1927. 1

' J. P.-KOLLA FURNACE WATER PAN CONSTRUCTION Filed April 13, 1925 2 SheetS,-Sheet 2 Invuflor John PKQ a WWM Patented I Mar. 1, 1927.

UNITED STATES Jenn 1?.

PATENT OFFICE.

KOLLA,-OF 'HOLLAND, MICHIGAN, ASSIGNOB TO HOLLAND FURNACE COMI- PANY, or HOLLAND, MICHIGAN, A ooaronarron OFlMICHIGAN.

, FURNACE-WATER-PAN CONSTRUCTION.

Applicationffiled April 13, 1925. Serial No. 22,514.

This invention relates to a novel construction of water holding pan for use in connection with furnaces; It has been the practice in connection with] hot air furnaces to interpose a water holding receptacle between the fire pot of the furnace and the outer casing therefor, whereby the water is heated and vapor rising therefrom =mingles with the air heated Within the outer casing of thefurnace, which air is carried to the various rooms of the house in which the casting, which forward projection is made for the purpose. of taking out the ashes from the ash pit, its front end being opened and closed by a door which may be opened for the purpose of removing the ashes. In this way the water panis made at the same time that the ash pit casting is cast without additional expense for molding and with-no expense except for the slight amount of added material'in the way of cast iron required. Such water pan made-in accordance with my invention does not interfere with the air circulation and as the bottom and sides of the' water pan are integral with the ash pit shell, receiving heat through radiation from the ash pit shell located directly above the ash pit, there is a greater tendency for water evaporation with a consequent 1ncrease in humidity of the heated air furnished to the rooms of a dwelling house from the furnace.

I am aware of water pans located above this extension of the ash pit, but they are separated and inclosed and consequently in a measure insulated and not effective and obstruct unduly the space. lizes the direct heat available at the point in addition to the heat developed otherwise. What I have done is comparable to removing the stove lid from under a kettle.

My invention has for its object and pur- My structure utipose the construction of a water pan, as. above described, capable of attaining the ends stated. For an understanding of this inventionfand practical embodiments thereof, reference may be had to the following description taken in connection with the following drawings, in which,

Fig. 1 is a partial front elevation and vertical section through the lower partof the inner furnace construction, the vertical' section being taken through the forward projection to the ash pit and'the water pan at the upper side thereof. 7

Fig. 2 is a fragmentary vertical section through the front portion 'of a furnace equipped with my invention.

Fig. 3 is a horizontal sectlon therethrough at a plane above the water pan.

Fig. 4 is a view similar to Fig. 1, illus-.

trating a modified form of construction.

Fig. 5 is a view similar to Fig. 2, the furnace being equipped with the modification in structure illustrated in Fig. 4, and

,Fig. 6 is a horizontal sectionsimilar to. Fig. 3, with-the modified form of construction shown.

Like reference characters refer to like parts in the different figures of the drawings. V

In the construction of the furnace the ash pit shell 1 is substantially circular in form and has a forwardly projecting portion at its front side, including spaced apart ver-- tical sides 2 and a top 3 integrally connect ing the sides at their upper edges. Above the ash'pit are the usual fire pot sections at and 5 and the combustion chamber and dome 6, the usual grate being interposed between the fire pots and the ash pit. Surrounding this inner construction is a sheet metal casing 7 having an opening at its front whiclris covered by a plate 8 in which a door 9 may be placed at a point a short distance above the top 8 of the forward extension to the ash pit.

Integral with the top 3 described are cast spaced apart vertical sides 10 connected at their ends by curved upwardly projecting ribs or sides 11 which also are spaced from each other, the sides 10 and 11 with the bottom provided by said member 3, forming a receptacle at the upper side of the forward extension to the ash pit in which water may be received and held. The filling of this pan with water may be accomplished in the usual manner by opening the door 9 and pouring water into the pan through said opening.

The water pan being in intimate relation to the ash pit shell and having its inner side 11 located relatively close to the lower sec tion 4 of the tire pot, receives a considerable amount of heat so that water therein is quickly heated and escapes as vapor into the air withinthe outer casing Tpwhich air heated and is conducted in the usual manner by furnace pipes to the rooms which the furnace serves. The formation of the *ater pan is very simple requiring only the addition of the necessary members to the ash pit casting pattern for the formation of the mold so that with the casting of the ash pit the water pan is simultaneously made. This dispenses with the separate water pan heretofore used and makes a particularly practical and effective water pan for furnaces and at a very low cost. The top plate of the ash pit extension becomes the bottom wall of the twaporating pan, and the evaporation is consequently enhanced thereby.

In Figs. l, 5 and (i a modification is shown wherein pockets one at each side of the forward extension to the ash pit are made by means of partitions or walls 12 of the shape shown, the outer sides of said pockets being provided by the sides 2 of the ash pit casting. These pockets open at their upper end are adapted to receive water and, in prac tice, water may be introduced into one of the pockets until it has reached a certain level. thence overflowing through a connecting pipe 13, shown in Fig. 4, into the other pocket. To fill the first pocket a water pipe 14, located at the outside of the furnace. atits lower end is provided with a lateral branch 15 which extends through the plate 8, similar in practically all respects to the plate 8 first described, so that: its inner end comes into a pocket for the delivery of the water from the pipe therein. The delivery without departing from the invention may be resorted to. The invention is defined in the appended claims and is to be considered comprehensive of all forms of structure coming within their scope.

I claim:

1. In combination with a furnace having an ash pit shell including a forward extension thereto having substantially vertical sides and a top between the upper edges of said sides, of a water pan disposed above said forward extension and wherein the top of said extension constitutes the bottom of the said water pan, integral spaced apart sides and integral spaced apart front and rear ribs being cast with said top of said forward extension to complete the pan, substantially as described.

2. In combination with a furnace having a cast ash pit shell including a forward extension having a top Wall, a water pan disposed above said extension the bottom wall of which is formed by said top wall of said extension as described.

3. In combination with a furnace having a cast ash pit shell including a forward extension having a top wall, a water pan disposed above said extension the bottom wall of which is formed by said top wall of said extension, a vertical wall separating the inner side of said pan from the other parts of the furnace as described.

In testimony whereof I affix my signature.

JOHN P. KOLLA. 

